Heating oil market study

The Competition and Markets Authority (CMA) has launched a market study into the retail supply of heating oil for domestic use in the UK.

• From: Competition and Markets Authority
• Published: 20 March 2026

• Case type: Markets
• Case state: Open
• Market sector: Utilities
• Opened: 20 March 2026

Administrative timetable

Date	Action
19 March 2027	Statutory deadline
June 2026	Publication of final report
20 March 2026	Launch of market study

Launch of market study

20 March 2026: The CMA launched a market study into the retail supply of heating oil for domestic use in the UK.

We invite views by 8 April 2026 from all interested parties on the areas covered in the Statement of Scope.

We aim to complete the market study and publish our final report within 3 months of launch.

• Market study notice (PDF, 101KB) (20.3.26)
• Statement of Scope (PDF, 203KB) (20.3.26)
• Roadmap (PDF, 269KB) (20.3.26)

Contact

heatingoil@cma.gov.uk

Privacy notice

The CMA may collect, use and share personal data for its market studies under the Enterprise Act 2002. This includes processing personal data for the purposes of the UK General Data Protection Regulation and the Data Protection Act 2018. 

For more information about how the CMA handles personal data, visit the CMA’s personal information charter.

Published 20 March 2026